Steam-shovel trip



c. E. HOUGHTON. STEAM SHOVEL TRIE.

7 APPLICATION FILED JAN. 20, 1920. I 1,348,719. Patented'Aug- 3,1920.

3 SHEETS-SHEET 1.

' WITNESS: IN VEN TOR.

04 BY CCZL/Ymy/IZZM.

Arronmsr.

C.E.HOUGHTON. STEAM suovu TRIP.

v APPLICATION FILED JAN. 20, I920- 1,34 ,71 9., Patented Aug. 3,1929.

3 SHEETS-SBEET 2.

WITNESS;

x ATTORNEY.

C. E. HOUGHTON.

. STEAM SHOVEL TRIP.

APPUCATION FILED JAN. 20, 1920.

1 ,348,719-.' I Patented Aug. 3', 1920.

3 SHEETSSHEET 3.

WITNESS: INVENTOR.

UNITED STATES OAKLEY E. HOUGI-ITOLL-OF MULBERRY, KANSAS.

STEAM-SI-IOVEL TRIP.

Specification of Letters Patent.

Application filed January 20, 1920. Serial No. 352.736.

To all whom it may concern:

Be it known that I, CARLEY E. Honori- 'roN, a citizen of the United States, residing at Mulberry, in the county of Crawford and State or" Kansas,-have invented new and useful Improvements in Steam-Shovel Trips, 01 which the following is a specification.

This invention has reference to a steam shovel trip. 7

The improvement is directed to that class of machineries in which the dipper has its bottom closed by a hinged door, the said dipper being arranged for travel a determined distance on a boom when the latter is swung to varying angles, and an object of the invention is to provide simple means for automatically releasing the dipper door when the boomhas elevated the dipper to a determined angle.

A further object of the invention is to provide a trip, for releasing the door of a steam operated'dipper which may be regulated so that the dipper may be dumped when the boom has assumed any desired an le.

3 further object of the invention is to provide any "combination with automatic means for releasing a door of a dipper, other means-which will likewise release the door when brought into engagement with a contact member, such as theedge of a wagon body or the like.-

The foregoing'objects, and others which will appear as the nature of the invention is better understood, may be accomplished by a construction, combination and operative,

arrangement of by the drawings.

In the drawings: I

Figure 1 is a view of the device, the beam being in horizontal position and the door of the dipper being locked closed.

Fig. 2 is a similar view, parts being broken away, and parts being sectioned,

parts such as is illustrated showing the boom swung to an angle, and

the door of the dipperreleased by my improved mechanism.

Fig. '8 is a sectional View approximately on the line 3'3 of Fig; 1.

Fig.- 1 is a sectional view approximately on the line 4.-4 of Fig. '1.

Fig. 5 isa sectional" view approximately on the line 5+5 of Fig. 1.

As the details of the dipper and boom operating means do not form part of the present invention, except inasmuch as certain features of the-boom and dipper cooperate with elements constituting the improvement, and especially in view of the fact that such machines are well-known in the art, reference will be had only to the boom and dipper.

The boom is indicated by the numeral 5 and the dipper by the numeral 6. The dipper has its bottom closed by a hinged door 7, and is supported in the channeled outer sides of the boom from rollers 8-8 and 99 that travel in the said sides. The rollers 99 have connecting the shafts thereof stabilizing bars 10 that are pivotally secured as at 11 to the inner and lower corner of the dipper 6.

On the rear closed wall of the dipper 6 there is an upper U-shaped bracket 12 and a lower similar shaped bracket 13. In the bracket 13 there is pivoted, as at 1 1 the straight arm 15 or" the latch 16 for the door 7. The arm 15 outward of the pivot is bent at an outward angle as indicated by the numeral 17, and to the angular end of the said arm there is pivotally connected the off-set end of a rod 18. This rod has its outer end headed as at 20. and passes through an opening in a plate or bracket 21 secured on the bar 10. Exerting a pressure between the plate or bracket 21 and the head 20 of the rod 18 is a helical spring 22.

Connected by the referred to oft-set end of the rod 18, which for distinction is indicated by the numeral 23 is a rocker bar 24. This bar passes throughthe upper bracket 12 and through the medium of the spring infiuenced rod 18 has its outer end normally retained at an inward angle with respect to the dipper 6. The rocker bar 2% projects a suitable distance above the dipper and is receivedin the space between the channeled islands that comprise the boom 5. These channeled islands are held in proper spaced relation with each other, at-the outer ends thereof, by filler blocks 25. The lower portions of the filler blocks are bifurcated so that the upper end of the bar 24 will be passed therethrough.

Pivotally connected to the off-set end 23 of the rod 18 and also pivotally connected as at 26 to the straight arm 15 of the latch 16 is an angle lever 27. The horizontal arm of the angle lever projects rearwardly from the dipper 6, and it will be apparent that a pressure exerted thereagainst will cause the said member 27 to spring upwardly on the Patented Aug. 3, 1920.

pivot 23, thus bringing the latch 16 out of engagement with the door 7 to release said door. This is desirable when the dipper is to be dumped when the boom is disposed horizontally or below a horizontal position, in which event the load from the dipper will be deposited directly into the bottom of the dump wagon. In this instance the angle member 27 is contacted by one of the upper members of the wagon body, the dipper being moved longitudinally of the boom tobring the said angle member in position for such contact. 7

On the outer sides of the channeled members of the boom 5, adjacent to the end of the said boom are secured angle brackets 28 which have their vertical arms in the path of contact with the rollers88. 'This prevents the dipper running off the boom.

Inward of the brackets 28, and between the channeled members that constitute the boom is a similar bracket 29. This last mentioned bracket has its vertical arm betweenthe spaced channeled irons that constitute the boom 5, and both the vertical arm andhorizontal arms of the brackets are bifurcated to permit of the passage of the upper end of the rocker bar 24 therethrough. The bracket 29 serves as a guide fora vertical movable contact member 30. This member 30is in the nature of a bar which preferably is twisted upon itself adjacent its lower end and its lower end is bent angularly to provide a foot 31. The

bar is provided with a plurality of spaced "openings 32 any one of which receiving 7 therethrough a pivot 33 that adjustably connects the bar and beam 3%. 'The beam has anangle 35 which is pivoted, as at 36 to an upstanding bracket 37 and secured to' the upper edge of the boom. On the end of the arm'85 is a weight 38. I Connected to the beam 34' and to the outer end of the contact member 30 is a stabilizing spring 39,,

will be arranged at an angle only slightly beyond the horizontal. The'said inclined position of the boom brings the rockerbar in the path of engagement with the foot 31 of the contact member 30. The engagement of the foot 31with the rocker bar, causes the latter to be swung on its pivotal connection 40 with the bracket 12 to move the lower end of the. said rocker bar inward of'the bucket against the tension of the spring to influence the, bar to swing the latch to door releasing position.

It will be further apparent that by adjusting the pivot of the beam the contact member may be likewise adjusted, and in view of the fact that the rocker bar 24L is at all times retained at an angle, it will thus be seen that the member 30 may be adjustable to cause the opening of the door 7 at any desired angle to which the boom is swung.

The member 27' has its lower edge notched, as clearly illustrated by the drawings. By this arrangement the contact of the notches of the said member with a wagon body, or the like, will cause the shovel to dump.

Having thus described the invention, what I claim is 1. In combination with a boom, a dipper movable longitudinally thereon, a hinged door closing the bottom of the'dipper and a pivoted spring influenced latchi'or locking the door closed; of tripping means for releasing the latch, including a rocker bar pivoted to the latch, and pivoted to the dipper, a weight influenced beam pivotally connected to the boom, an adjustable contact member secured on the beam, guide'means for the contact member carried by the boom, and said contact member designed to be brought in ,the'path of engagement with the upper end of the rocker bar when the boom and buckets have been'swung to an upward inclination and the bucket has been moved outwardof the boom to bring the rocker bar in engagement with the contact member.

2. Incombination with a boom, a dipper movable longitudinally thereon, a hinged door closing the bottom; of the dipper, and a pivoted latch for'locking the door closed; of tripping means for the latch,including an angularly disposed pivotal rocker bar, springinfluenced means connecting the latch and rocker bar for retaining the latch in looking position and the rocker bar at an angle, an angle beam having its depending arm weighted pivotally supported on the boom, an adjustable contact member supported on the outer end of the. beam, springfmeans between said member and beam, for swinging the beam in one direction, guide means for the contact member, limiting the swinging thereof, and said contact member beingnormally held in one positionby the, weighted beam whereby the same will be brought into contacting position with the rocker bar to release the latch when the beam is, swung to an upwardangle and the dipper is moved outward of the boom.

3. In combination with a boom, a dipper movable longitudinally thereon, a hinged door for the dipper and a pivoted latch en gaging with the door for holding the same closed, said latch having an off-set arm, a rocker bar pivoted to the bucket and extending thereabove and receiving in the boom, a spring influenced rod having angle end members, a pivot having an angle on and for the latch and rocker members, an angle member also pivoted to the said rod and pivotally connected to the latch, an upstanding bracket on the boom, an angle beam pivotally secured to the bracket, a weight on the depending arm of the beam, a contact member comprising a plate having spaced apertures therethrough, a pivot on the end of the horizontal arm of the beam passing through one of the said apertures, spring means between the contact member and the beam for swinging the contact member in one direction, said contact member having its lower end formed with a foot directed toward the rocker bar and designed to bear thereagainst to cause the said rocker bar to move the latch to unlatching position when the boom is swung to an upward'angle and the dipper has been moved outwardly on the boom.

In testimony whereof I aflix my signature.

CARLEY E. HOUGHTON. 

